What is the main purpose of a tapered crankpin?

A tapered crankpin helps to precisely align and secure the crankshaft components during assembly. Its tapered shape ensures a snug fit, which is crucial for the smooth and balanced operation of the engine.

Does this crankpin come with any installation hardware?

This product listing is for the S&S Cycle 1.251in Tapered Crankpin (Part # 34-2105) only. Installation hardware, such as nuts or washers, is typically sold separately. Always refer to the manufacturer's instructions for a complete parts list for your rebuild.

What specific Harley-Davidson models does this crankpin fit?

This crankpin fits a broad range of 1981-1999 Harley-Davidson Big Twin models. Examples include the FLHS Electra Glide Sport, FLSTC Heritage Softail Classic, and FXDL Dyna Low Rider, among many others listed in the fitment details.

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Trusted Since 1957

Est. 1957

Specifications

Brand: S&S Cycle
Part #: 34-2105
UPC: 34-2105

S&S Cycle 1981+ BT 1.251in Tapered Crankpin

Name: S&S Cycle 1981+ BT 1.251in Tapered Crankpin
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-1981-bt-1-251in-tapered-crankpin-t14-619278
Price: 165.67 USD
Availability: BackOrder

$165.67

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1981+ Big Twin engines. This 1.251in tapered crankpin is a well-built replacement for your engine rebuild.

Key Features

Fits 1981 and later Harley-Davidson Big Twin engines.
Features a 1.251 inch tapered design.
Well-built by S&S Cycle for reliable engine performance.
Direct replacement part for simplified installation.
Compatible with a wide range of Harley-Davidson models from 1981-1999.

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Will this fit your vehicle?

About this part

Product Details

If you're rebuilding the crankshaft on your 1981 and later Big Twin Harley-Davidson, this tapered crankpin from S&S Cycle is a solid option. It measures 1.251 inches, offering a precise fit for your engine's needs.

S&S Cycle is known for making well-built engine components, and this crankpin is no exception. It's designed to meet the demands of engine work, ensuring reliable performance when you put your motor back together. This part is a direct replacement, meaning it's made to install without needing modifications, simplifying your rebuild process.

This crankpin fits a wide range of Harley-Davidson models from 1981 through 1999, including popular bikes like the Electra Glide, Softail, and Dyna series. Make sure to check the full fitment list to confirm it's the right part for your specific motorcycle.